plugins install
The plugins install subcommand installs a Packer plugin at a version constraint
Related
packer initwill install all required plugins.
The plugins install subcommand installs a Packer plugin at a version constraint
$ packer plugins install -h
Usage: packer plugins install <plugin> [<version constraint>]
This command will install the most recent compatible Packer plugin matching
version constraint. When the version constraint is omitted, the most recent
version will be installed.
Ex: packer plugins install github.com/hashicorp/happycloud v1.2.3
packer init will install all required plugins.